keiran/goedit
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add line numbers

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This commit is contained in:
Keiran 2025-08-06 10:11:05 +01:00
parent bd179ccc99
commit 1bb6c16786
1 changed files with 9 additions and 4 deletions
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13
cmd/goedit/main.go
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@ -150,21 +150,25 @@ func (m Model) View() string {
b.WriteString("Text Editor (Ctrl+C or Esc to quit)\n\n") b.WriteString("Text Editor (Ctrl+C or Esc to quit)\n\n")
contentHeight := m.height - 4 contentHeight := m.height - 4
lineNumWidth := len(fmt.Sprintf("%d", len(m.lines))) + 1
for i, line := range m.lines { for i, line := range m.lines {
if i >= contentHeight { if i >= contentHeight {
break break
} }
lineNum := fmt.Sprintf("%*d ", lineNumWidth, i+1)
if i == m.row { if i == m.row {
if m.col == 0 { if m.col == 0 {
b.WriteString("█" + line + "\n") b.WriteString(lineNum + "█" + line + "\n")
} else if m.col >= len(line) { } else if m.col >= len(line) {
b.WriteString(line + "█\n") b.WriteString(lineNum + line + "█\n")
} else { } else {
b.WriteString(line[:m.col] + "█" + line[m.col:] + "\n") b.WriteString(lineNum + line[:m.col] + "█" + line[m.col:] + "\n")
} }
} else { } else {
b.WriteString(line + "\n") b.WriteString(lineNum + line + "\n")
} }
} }
@ -178,6 +182,7 @@ func (m Model) View() string {
return b.String() return b.String()
} }
func main() { func main() {
p := tea.NewProgram(NewModel(), tea.WithAltScreen()) p := tea.NewProgram(NewModel(), tea.WithAltScreen())
if _, err := p.Run(); err != nil { if _, err := p.Run(); err != nil {